[Bug 280810] igc(4) - include reference to intel i226

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280810

            Bug ID: 280810
           Summary: igc(4) - include reference to intel i226
           Product: Documentation
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: Manual Pages
          Assignee: bugs@FreeBSD.org
          Reporter: erichanskrs@gmail.com
                CC: doc@FreeBSD.org

I request that igc(4) be updated to include a reference to the intel i226.

It seems that Intel i226 chips are supported by the igc(4) driver*

As there is currently growing interest in 2.5G support for FreeBSD,
it would help FreeBSD users if the relevant I226-* chips are explicitly
mentioned in igc(4)


For the following currently supported FreeBSD versions, including -CURRENT,
igc(4) does not mention the intel i226 nic. In the HARDWARE section it only
lists i225 chips:
https://cgit.freebsd.org/src/tree/share/man/man4/igc.4

https://cgit.freebsd.org/src/tree/share/man/man4/igc.4?h=stable%2F13
https://cgit.freebsd.org/src/tree/share/man/man4/igc.4?h=releng%2F13.3
https://cgit.freebsd.org/src/tree/share/man/man4/igc.4?h=releng%2F13.4

https://cgit.freebsd.org/src/tree/share/man/man4/igc.4?h=stable%2F14
https://cgit.freebsd.org/src/tree/share/man/man4/igc.4?h=releng%2F14.0
https://cgit.freebsd.org/src/tree/share/man/man4/igc.4?h=releng%2F14.1


___
* Based on the Product brief Intel i225/i226
https://cdrdv2.intel.com/v1/dl/getContent/621753
one distinguishing difference is the support for RSS:
"Receive Side Scaling (RSS) (I226 only)"

https://github.com/freebsd/freebsd-src/blob/releng/14.1/sys/dev/igc/if_igc.c#L40-L70
references the i226 IGC_DEV_ID_I226_* id's

Based on
https://github.com/freebsd/freebsd-src/blob/releng/14.1/sys/dev/igc/if_igc.c#L1388
and various other RSS references it looks like the i226 is actively supported
by FreeBSD.

Notably: although the i225 is explicitly mentioned in the 14.1 Hardware Notes
for igc(4):
https://www.freebsd.org/releases/14.1R/hardware/
the i226 is not mentioned.

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